Granted Patent
Utility
US 6,090,973 · App. 09/411,948
Polyester toner composition for electrophotographic imaging systems
Inventors:
Marie Borzo, Kophu Chiang, Eui W. Choe, Rao D. Mikkilineni, Hyun-Nam Yoon
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Oct 4, 1999
Inventors
Marie Borzo
Kophu Chiang
Eui W. Choe
Rao D. Mikkilineni
Hyun-Nam Yoon
Assignee (at issue)
Hoechst Celanese Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.